My husband has FM and my son has adolescent CFS. So lots of interesting sleep dysfunction here. Melatonin helped my husband for awhile when he was having a terrible time getting to sleep then staying asleep. Rescue Remedy worked for him after Melatonin stopped having an effect. He'd take a few drops at bedtime, and within 20 min. be asleep. If he woke through the night (frequently) he would take a few more drops and sleep again. It didn't work for my son though. Valerian worked for me and my husband until we didn't really need help anymore.